#include <stdio.h>
#include <conio.h>

int main()
{
	char ch;
	printf("Nhap 1 ky tu: ");
	scanf("%c", &ch);
	
	if ((ch>=65) && (ch<=90))
		printf("Ky tu vua nhap la chu HOA");
	else if ((ch>=97) && (ch<=122))
		printf("Ky tu vua nhap la chu thuong");
	else
		printf("Ky tu vua nhap la: %c", ch);
	
	getch();
	return 0;
}